Remove Cascade double-VPN (v2.3.0).

Drop cascade manager, API, server UI, and i18n keys after unstable egress/routing behavior.

translations/fa.json

@@ -518,50 +518,5 @@
     "xui_server_name_hint":  "در دعوت‌ها نمایش داده می‌شود (مثل US، NL).",
     "xui_server_select_label":  "سرور 3x-ui",
     "xui_server_select_hint":  "پنل 3x-ui که URL اشتراک می‌دهد را انتخاب کنید.",
-    "xui_server_delete_confirm":  "این سرور 3x-ui حذف شود؟",
-    "cascade_title":  "Cascade (double VPN)",
-    "cascade_desc":  "Clients connect to this entry server; internet exits through another server — to bypass country blocks.",
-    "cascade_hint":  "ryderams-style AWG2 cascade: entry and exit must both have AmneziaWG/WireGuard. Clients keep using the ENTRY config only.",
-    "cascade_client_note":  "Users connect only to the ENTRY server. Do not give them the exit cascade peer.",
-    "cascade_security_note":  "Logic runs via panel SSH (no remote curl|bash). Based on ryderams/amneziawg-cascade approach.",
-    "cascade_entry_protocol":  "Protocol on this server (entry)",
-    "cascade_exit_server":  "Exit server",
-    "cascade_exit_server_none":  "— Select server —",
-    "cascade_exit_protocol":  "Protocol on exit server",
-    "cascade_enable":  "Enable cascade",
-    "cascade_disable":  "Disable cascade",
-    "cascade_working":  "Setting up cascade…",
-    "cascade_disabling":  "Disabling cascade…",
-    "cascade_enabled":  "Cascade enabled",
-    "cascade_disabled":  "Cascade disabled",
-    "cascade_off":  "Off",
-    "cascade_on":  "Active",
-    "cascade_configured_down":  "Configured, tunnel down",
-    "cascade_exit_required":  "Select an exit server",
-    "cascade_enable_confirm":  "Enable cascade? A service client will be created on the exit server and a tunnel will be set up on this entry server.",
-    "cascade_disable_confirm":  "Disable cascade on this server?",
-    "cascade_no_handshake":  "Up, no handshake",
-    "cascade_settings_title":  "Cascade settings (per step)",
-    "cascade_settings_desc":  "If pages spin forever with no internet — keep all options on and click Enable cascade again.",
-    "cascade_opt_pin_exit":  "Pin route to exit server",
-    "cascade_opt_pin_exit_hint":  "Keeps the exit tunnel from looping through the VPN itself.",
-    "cascade_opt_remove_eth_masq":  "Remove client NAT on eth0",
-    "cascade_opt_remove_eth_masq_hint":  "Clients must not egress directly from the entry server.",
-    "cascade_opt_force_forward":  "Force FORWARD between interfaces",
-    "cascade_opt_force_forward_hint":  "Client traffic → cascade → exit.",
-    "cascade_opt_mss_clamp":  "TCP MSS clamp",
-    "cascade_opt_mss_clamp_hint":  "Fixes endless page loads on double VPN.",
-    "cascade_opt_wait_handshake":  "Wait for exit handshake",
-    "cascade_opt_wait_handshake_hint":  "Do not mark cascade active if the exit peer never answers.",
-    "cascade_verify_egress":  "Verify egress IP",
-    "cascade_verify_egress_hint":  "After handshake, verify policy route from awg0 IP via cascade, then curl public-IP services. Soft-warn if curl fails but route is OK.",
-    "cascade_opt_keep_dns":  "Keep DNS from exit config",
-    "cascade_opt_keep_dns_hint":  "Usually off — the client sets DNS itself.",
-    "cascade_opt_handshake_timeout":  "Handshake timeout (sec)",
-    "cascade_opt_table_id":  "Routing table id",
-    "cascade_opt_rule_priority":  "ip rule priority",
-    "cascade_opt_allowed_ips":  "AllowedIPs for entry→exit tunnel",
-    "cascade_opt_allowed_ips_hint":  "Prefer 0.0.0.0/0 (IPv4); ::/0 often breaks double VPN.",
-    "cascade_opt_vpn_subnet":  "Client subnet override",
-    "cascade_opt_vpn_subnet_hint":  "Empty = auto-detect from server Address"
+    "xui_server_delete_confirm":  "این سرور 3x-ui حذف شود؟"
 }